1000 pack, 1/2" heavy duty staple, wide crown, fits swingline/desa/powerfast models: 800, 800x, 900, 1000, 10060, 31600, 31800, 34201, 34301, 34302, 80000 & 80020; master mechanic models: 174839, 345025, 136150, tre-50mm, tre-30mm 7 tr70tv; sears craftsman models: 68477, 68478, 68418, 6843, 6846, 68642, 68423, 68447, 68471 & 68481; Stanley parker models: tr70, tr75, tr80, tre100, tre50, tre200 & tre300; ace hardware models: 22084, 22087 & 27175; black & decker models: 9701 & 9700.